Ring wheel grinder and method of making same



1,642,096 p 1927- I G. E. VANCE RING WHEEL GRINDER AND METHOD OF MAKINGSAUE Filed Now 13. 1925 @agw lil/Zzca Patented Sept. 13, 1927' UNITEDSTATES PATENT OFFICE.

Application filed Iovember 18, 1 985. Serial No. 88,831.

My invention relates to ring wheel grinders and has for its object toprovide a ring grinder made up of a series of assembled segments and inwhich the segments Wlll be firmly secured together by means ada ted toresist the strainstending to displace t 43' segments which occur in use.

Further objects are to form such a ring grinder so that it will fit inthe usual holdmg chucks and to so construct it as to provide what is ineflect a clearance between the segments. The nature of my invention willbe best understood as described in connection with the drawings, inwhich:

'5 Figure 1 is a side elevation of a ring grinder constructed inaccordance with my invention and Figure 2 is an end view of the grindershowingits lower end.

20, My ring grinder is made up of a series ofsegments A, A A etc. whichare formed with peripheral grooves B, B, etc. assembled into ring orcylinder form as shown and secured together by metal clamps D, D, etc.which are conveniently wire windings, and

which lie'in the rooves B below the periphery of the assem led ring. Bypreference I assemble the'segments with spacin pieces G, G, etc. betweentheir lateral en s which spacing pieces are of a material more ieldingthan that of the segments so that in use a clearance space is providedbetween the segments.

To further strengthen the assembled ring I prefer to form the se mentswith grooves C at their rear ends WhlCll form an annular groove in thering and in this groove I secure a metal ring E by cementing it in placeby sulphur or some suitable cement as indicated at In forming mygrinding ring the segments, which are somewhat irregular in form asproduced are formed with the peripheral grooves B, and the end grooves OI if the base ring is to be used, the segments are assembled and firmlysecured together by the clamping rings in the grooves andthen the ringis ressed to true cylindrical-form. In th1s way I secure a segmentalgrinding ring adapted to fit in the usual holding 1 chucks and ofnecessary strength to resist stra ns tending to displace the segments.

Ring wheel rinders of the type to which my grinder be ongs are worn awayat their exposed ends and by roviding as I do a series' of metal clampseld in grooves located between the ends of the grinder I rovide for therigid holding together oft e segment as the grinder is worn away and theu per clamps removed, as the must be w en the grinder is worn to theevel of the grooves containing the clamps. The 'base ring E not onlyaidsin clamping the segments together but affords a base for theadjusting means contained in the chuck which holds the grinder andcounteracts an tendency to move individual segments longitudinally.

' Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. ring wheel grinder comprising in comblnation a series of segmentsassembled 1n ring form with a, ser1es of peripheral rooves formed in thecylindrical outer surace of the composite ring at points between itsends and metallic clamping rings located in said grooves below thesurface of the cylinder.

claim 1, havingspacin pieces between adjacent segments of di erentmaterial than the se lgments.

3. he ring wheel grinder as claimed in claim 1 further characterized byhaving an annular groove formed in one end of the composite ring wheeland by having a metal rlng located and secured in said end groove.

GEORGE E. VANCE.

2. The ring wheel grinder as claimed in T

